[#26] CrawlingService: @async 추가

src/main/java/skhu/jijijig/service/CrawlingService.java

@@ -6,6 +6,7 @@
 import org.springframework.context.ApplicationContext;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
+import org.springframework.scheduling.annotation.Async;
 import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -45,6 +46,7 @@ public void scheduleCrawlingTasks() {
         crawlingService.performCrawling("https://quasarzone.com/bbs/qb_saleinfo", "퀘사이존", "div.market-info-list");
     }
 
+    @Async
     @Transactional
     public void performCrawling(String url, String label, String rowsCssSelector) {
         System.out.println(label);